Why is wāw suitable in “al-khaṭṭu mutashābihun wa-l-khatmu mukhtalifun”?

Supplementary Practice 13: Attribution, Quotation and Evidential Restraint in Rhetorical Analysis

• The second is a word-for-word reiteration
• Both must have exactly the same subject
• Two independent observations share the inquiry into attribution
• Wāw itself establishes the seal’s authenticity